一种宽带WLAN贴片天线  

A Wideband Patch Antenna for Wireless Local Area Network

作　　者：刘影 蒋宪鑫 李明亮 郭培培 范瑜 LIU Ying;JIANG Xian-xin;LI Ming-liang;GUO Pei-pei;FAN Yu(Shanghai Radio Equipment Research Institute,Shanghai 201109,China;The First Military Representative Office of Air Force Equipment Department in Shanghai,Shanghai 201100,China)

机构地区：[1]上海无线电设备研究所,上海201109 [2]空军装备部驻上海地区第一军事代表室,上海201100

出　　处：《微波学报》2023年第2期48-51,57,共5页Journal of Microwaves

摘　　要：文中提出了一种单馈的宽带贴片天线应用于无线局域网络通信。该天线由方形贴片、电抗性阻抗表面以及电磁带隙结构组成。文中提出同时加载电抗性阻抗表面和电磁带隙结构能够实现小型化以及宽带化。电抗性阻抗表面作为接地平面能够降低天线的谐振频率。电磁带隙结构能够提高天线的阻抗带宽。测试结果表明所提出的WLAN贴片天线的相对带宽为22.3%(S11=-10 dB),覆盖4.77~5.97 GHz,可以获得6.3~7.2 dBi增益。与现有宽带小型化天线相比,该天线在保证宽带小型化的前提下仍具有较高增益,且辐射性能具有较高的一致性,十分有利于其应用。该天线能够覆盖IEEE 802.11a标准所规定的5 GHz频段,能够实现无线局域网之间的高速数传。In this paper,a single-fed patch antenna with wide impedance bandwidth for Wireless Local Area Network(WLAN)is proposed,which composed of square patch,reactive impedance surface(RIS)and Electromagnetic Band-Gap(EBG)structure.This paper puts forward to simultaneously load RIS and EBG structure to achieve miniaturization and wide impedance bandwidth.RIS structure is used as the ground plane to decrease operating frequency of patch antenna.EBG structure is used to improve impedance matching bandwidth.The measured results show that the proposed hybrid patch antenna offers fractional bandwidth of 22.3%(S11<-10 dB)from 4.77 GHz to 5.97 GHz,where the WLAN patch antenna can obtain the gain from 6.3 dBi to 7.2 dBi.Compared with the current broadband miniaturized antenna,it still has higher gain and higher consistency of radiation performance on the premise of ensuring broadband miniaturization,which is very beneficial to its application.The proposed antenna can cover 5 GHz band set by IEEE 802.11a standard,and can support high-speed WLAN.

关 键 词：小型化 宽带 电抗性阻抗表面 电磁带隙结构 无线局域网络 

分 类 号：TN820[电子电信—信息与通信工程]